ZXBar: Hemphillian, Nebraska
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Rodentia
- Geomyidae
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Pliogeomys russelli n. sp.
Korth 1995
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Korth 1995 | |||||||||
| (1 measurement) | ||||||||||
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Mammalia
- Rodentia
- Heteromyidae
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Perognathus coquorum n. sp.
Wood 1935
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| (1 measurement) | ||||||||||
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= Prodipodomys coquorum
Wood 1935
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Alroy 2002 | |||||||||
| original and current combination Perognathus coquorum | ||||||||||
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Mammalia
- Lagomorpha
- Leporidae
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Hypolagus sp.
Dice 1917
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= Archaeolaginae indet.
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Dawson 1958 | |||||||||
| "upper Snake Creek, Pliohippus draw" | ||||||||||
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Mammalia
- Talpidae
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Gaillardia thomsoni n. sp.
Matthew 1932
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| see Matthew 1932b | ||||||||||
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Mammalia
- Carnivora
- Mustelidae
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Pliotaxidea nevadensis
(Butterworth 1916)
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| described by Cook and Macdonald 1962, from "Pliohippus Draw... Pliohippus leidyanus level" | ||||||||||
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Mammalia
- Carnivora
- Procyonidae
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Arctonasua eurybates n. sp.
Baskin 1982
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Baskin 1982 | |||||||||
| "Upper channel fill in Pliohippus Draw... Johnson Member" | ||||||||||
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Mammalia
- Carnivora
- Canidae
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Osteoborus direptor n. sp.
(Matthew 1924)
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= Borophagus secundus
VanderHoof 1931
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Alroy 2002 | |||||||||
| see Richey 1979; also includes "Borophagus sp." of Cook and Macdonald 1962 from "Pliohippus Draw... Pliohippus leidyanus level" according to Wang et al. 1999 | ||||||||||
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Mammalia
- Merycoidodontidae
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Ustatochoerus major
(Leidy 1858)
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= Merychyus cf. major
Leidy 1858
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Alroy 2002 | |||||||||
| recombined as Ustatochoerus major | ||||||||||
| a maxilla, possibly reworked but no specific reason is given to support the theory | ||||||||||
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Mammalia
- Bovidae
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Neotragocerus improvisus n. sp.
Matthew and Cook 1909
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Mammalia
- Palaeomerycidae
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Pediomeryx cf. hemphillensis
Stirton 1936
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Mammalia
- Tayassuidae
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Prosthennops serus
(Cope 1877)
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Mammalia
- Camelidae
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Megatylopus gigas
(Matthew and Cook 1909)
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| probable type locality | ||||||||||
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Mammalia
- Perissodactyla
- Equidae
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Dinohippus leidyanus n. sp.
(Osborn 1918)
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Mammalia
- Megalonychidae
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Megalonyx curvidens
Matthew 1924
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Nebraska | County: | Sioux |
| Coordinates: | 42.4° North, 103.8° West (view map) | ||||
| Paleocoordinates: | 42.7° North, 102.1° West | ||||
| Basis of coordinate: | based on political unit | ||||
| Geographic resolution: | small collection |
Time
| Period: | Neogene | ||
| 10 m.y. bin: | Cenozoic 6 | ||
| *Period: | Tertiary | *Epoch: | Miocene | *Local age/stage: | Hemphilian |
| Key time interval: | Hemphillian | ||
| Age range of interval: | 9.40000 - 4.70000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Snake Creek | Member: | Johnson |
| Local section: | Snake | Local bed: | 9 |
| Local order: | bottom to top |
Lithology and environment
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
| Taxonomic list comments:presumably includes all material from the Upper Snake Creek of Pliohippus Draw that does NOT come from The Pits specimen of Agriotherium sp. could be from the Laucomer Mbr. | |
Metadata
| Also known as: | Cook's Pliohippus Quarry | ||
| Database number: | 18499 | ||
| Authorizer: | J. Alroy | Enterer: | J. Alroy |
| Modifier: | J. Alroy | Research group: | vertebrate |
| Created: | 1992-08-05 00:00:00 | Last modified: | 2007-08-19 13:39:12 |
| Access level: | the public | Released: | 1992-08-05 00:00:00 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 3175. | M. F. Skinner, S. M. Skinner, and R. J. Gooris. 1977. Stratigraphy and biostratigraphy of late Cenozoic deposits in central Sioux County, western Nebraska. Bulletin of the American Museum of Natural History 158(5):263-370 [J. Alroy/J. Alroy/J. Alroy] |
Secondary references:
| 6294 | J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari] | |
| 1028 | 5% 29740 | J. A. Baskin. 1982. Tertiary Procyoninae (Mammalia: Carnivora) of North America. Journal of Vertebrate Paleontology 2(1):71-93 [J. Alroy/J. Alroy/J. Alroy] |
| 1335 | M. R. Dawson. 1958. Later Tertiary Leporidae of North America. University of Kansas Paleontological Contributions Vertebrata 6:1-75 [J. Alroy/J. Alroy/P. Holroyd] | |
| 2126 | W. W. Korth. 1995. Rodents from the Late Hemphillian (Latest Miocene), Sioux County, Nebraska. Transactions of the Nebraska Academy of Sciences 22:87-92 [J. Alroy/J. Alroy/M. Uhen] |